using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace RichCreator.Utility
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{
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public sealed class Utils
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{
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/// <summary>
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/// 得到屏幕大小
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/// </summary>
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/// <param name="width"></param>
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/// <param name="height"></param>
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public static void GetWindowSize(out Int32 width, out Int32 height)
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{
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GetWindowSize(GetDesktopWindow(), out width, out height);
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}
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/// <summary>
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/// 得到屏幕大小
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/// </summary>
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/// <param name="width"></param>
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/// <param name="height"></param>
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private static void GetWindowSize(IntPtr hWnd, out Int32 width, out Int32 height)
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{
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Rect windowRect = new Rect();
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GetWindowRect(hWnd, ref windowRect);
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width = windowRect.right - windowRect.left;
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height = windowRect.bottom - windowRect.top;
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}
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/// <summary>
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/// 获取颜色
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/// </summary>
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/// <param name="x">鼠标相对于显示器的坐标X</param>
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/// <param name="y">鼠标相对于显示器的坐标Y</param>
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/// <returns></returns>
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public static Color GetColor(int x, int y)
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{
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byte r = 0;
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byte g = 0;
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byte b = 0;
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GetColor(x, y, out r, out g, out b);
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Color color = Color.FromArgb(r, g, b);
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return color;
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}
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/// <summary>
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/// 获取颜色
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/// </summary>
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/// <param name="x"></param>
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/// <param name="y"></param>
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/// <returns></returns>
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public static System.Windows.Media.Color GetWPFColor(Int32 x, Int32 y)
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{
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byte r = 0;
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byte g = 0;
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byte b = 0;
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GetColor(x, y, out r, out g, out b);
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System.Windows.Media.Color color = System.Windows.Media.Color.FromArgb(0xff,r, g, b);
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return color;
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}
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/// <summary>
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/// 获取颜色
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/// </summary>
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/// <param name="x"></param>
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/// <param name="y"></param>
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/// <param name="r"></param>
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/// <param name="g"></param>
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/// <param name="b"></param>
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public static void GetColor(Int32 x, Int32 y, out byte r, out byte g, out byte b)
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{
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IntPtr hdc = GetDC(IntPtr.Zero);
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uint pixel = GetPixel(hdc, x, y);
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ReleaseDC(IntPtr.Zero, hdc);
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r = (byte)(pixel & 0x000000FF);
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g = (byte)((pixel & 0x0000FF00) >> 8);
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b = (byte)((pixel & 0x00FF0000) >> 16);
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}
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/// <summary>
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/// Num Lock是否打开
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/// </summary>
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/// <returns></returns>
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public static bool NumLockIsOn()
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{
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return (((ushort)GetKeyState(0x90)) & 0xffff) != 0;
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}
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/// <summary>
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/// CapsLock是否打开
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/// </summary>
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/// <returns></returns>
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public static bool CapsLockIsOn()
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{
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return (((ushort)GetKeyState(0x14)) & 0xffff) != 0;
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}
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/// <summary>
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/// ScrollLock是否打开
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/// </summary>
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/// <returns></returns>
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public static bool ScrollLockIsOn()
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{
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return (((ushort)GetKeyState(0x91)) & 0xffff) != 0; ;
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}
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/// <summary>
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/// 得到当前鼠标位置
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/// </summary>
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/// <param name="x"></param>
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/// <param name="y"></param>
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public static void GetCursorPoint(out Int32 x, out Int32 y)
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{
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Utils.MarshalPoint point = new Utils.MarshalPoint();//必须用与之相兼容的结构体，类也可以
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Utils.GetCursorPos(ref point);//获取当前鼠标坐标
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x = point.X;
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y = point.Y;
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}
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#region DLL Import
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[DllImport("user32.dll")]
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internal static extern IntPtr GetDesktopWindow();
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/// <summary>
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/// 获取指定窗口的设备场景
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/// </summary>
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/// <param name="hwnd">将获取其设备场景的窗口的句柄。若为0，则要获取整个屏幕的DC</param>
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/// <returns>指定窗口的设备场景句柄，出错则为0</returns>
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[DllImport("user32.dll")]
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private static extern IntPtr GetDC(IntPtr hwnd);
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public const int SRCCOPY = 0x00CC0020; // BitBlt dwRop parameter
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[DllImport("gdi32.dll")]
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internal static extern bool BitBlt(IntPtr hObject, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hObjectSource, int nXSrc, int nYSrc, int dwRop);
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[DllImport("gdi32.dll")]
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internal static extern IntPtr CreateCompatibleBitmap(IntPtr hDC, int nWidth, int nHeight);
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[DllImport("gdi32.dll")]
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internal static extern IntPtr CreateCompatibleDC(IntPtr hDC);
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[DllImport("gdi32.dll")]
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internal static extern bool DeleteDC(IntPtr hDC);
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[DllImport("gdi32.dll")]
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internal static extern bool DeleteObject(IntPtr hObject);
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[DllImport("gdi32.dll")]
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internal static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
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[DllImport("user32.dll")]
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internal static extern IntPtr GetWindowDC(IntPtr hWnd);
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[DllImport("user32.dll")]
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internal static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDC);
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[DllImport("user32.dll")]
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internal static extern IntPtr GetWindowRect(IntPtr hWnd, ref Rect rect);
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[DllImport("user32.dll", EntryPoint = "GetCursorPos")]//获取鼠标坐标
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internal static extern int GetCursorPos(ref MarshalPoint point);
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[DllImport("user32.dll", EntryPoint = "WindowFromPoint")]//指定坐标处窗体句柄
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internal static extern int WindowFromPoint(int x, int y);
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/// <summary>
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/// 在指定的设备场景中取得一个像素的RGB值
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/// </summary>
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/// <param name="hdc">一个设备场景的句柄</param>
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/// <param name="x">逻辑坐标中要检查的横坐标</param>
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/// <param name="y">逻辑坐标中要检查的纵坐标</param>
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/// <returns>指定点的颜色</returns>
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[DllImport("gdi32.dll")]
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private static extern uint GetPixel(IntPtr hdc, int x, int y);
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//控制键CapLocks状态的API函数
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[DllImport("user32.dll")]
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static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, UIntPtr dwExtraInfo);
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/// <summary>
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/// 取得键状态的API函数
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/// </summary>
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/// <param name="keyCode"></param>
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/// <returns></returns>
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[DllImport("user32.dll",CharSet = CharSet.Auto,ExactSpelling = true,CallingConvention = CallingConvention.Winapi)]
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public static extern short GetKeyState(int keyCode);
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[StructLayout(LayoutKind.Sequential)]//定义与API相兼容结构体，实际上是一种内存转换
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internal struct MarshalPoint
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{
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public int X;
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public int Y;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct Rect
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{
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public int left;
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public int top;
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public int right;
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public int bottom;
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}
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#endregion
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}
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}
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